CCTV主楼大悬臂钢结构施工关键技术  

KEY TECHNIQUES IN CONSTRUCTION OF LARGE CANTILEVER STEEL STRUCTURE OF CCTV MAIN BUILDING

作　　者：熊涛 陈振明 张琨[2] 彭明祥[2] 许立山[2] 

机构地区：[1]中建钢构有限公司,江苏靖江214532 [2]中国建筑第三工程局有限公司,武汉430000

出　　处：《建筑技术》2009年第10期870-874,共5页Architecture Technology

摘　　要：CCTV主楼为复杂连体结构,连体悬臂结构是结构的核心部分,呈空间"L"形,具有结构施工难度大,悬挑跨度大、结构位形控制要求高、施工安全控制难度大等特点。通过合理制订悬臂钢结构安装方案,采用合龙关键施工技术,包括合龙前的位形分析、合龙构件结构分析及主要施工措施等,确保了悬臂结构合龙顺利完成。CCTV main building adopts a complex connected structure. The connected cantilever structure is the core part of the building, forming a dimensional ＂L＂ shape. The structure has many characteristics, such as large cantilever span, high requirements for control of structural shape and large difficulty in safe construction control and structural construction. Reasonable plan for installation of cantilever steel structure is established and key closure construction techniques, including analysis on position and shape before closure, structural analysis of closure members and main construction measures, are adopted to guarantee successful completion of cantilever structure closure.

关 键 词：钢结构 悬臂结构 合龙 销轴 连接键 

分 类 号：TU758[建筑科学—建筑技术科学]